Cocal-Cola, Diet Coke , Coke Zero - each member of the Coke family - and even rank outsider Pepsi - has its own dedicated fanbase.

Responding to a consumer decline in fizzy drinks as people become more health conscious, the soft drink giant launched the first can of Diet Coke in 1983, followed by Coke Zero in 2006 and the launch this year of Coke with Stevia.

Also Read: Chinese restaurant offering discounts to women with bigger boobs faces backlash

Diet Coke was marketed as having no sugar, as is Coke Zero - so what's the actual difference between them, bar the packaging?

As it turns out, there is one crucial difference between the two soft drinks.
It comes down to a single chemical

The intention for both drinks is for them to have very different tastes.

Zero Sugar is crafted to taste like 'Full Fat Coke', whereas Diet Coke is meant to have its own, distinctive flavour.

To achieve these different tastes, Zero Sugar uses sodium citrate and Diet Coke has citric acid.

The full list of Coca-Cola Zero Sugar ingredients:

Water, colour (caramel E150d), phosphoric acid, sweeteners (aspartame, asesulfame K), natural flavourings including caffeine, acidity regulator (sodium citrate).

The full list of Diet Coke ingredients:

Carbonated water, colour (caramel E150d), sweeteners (aspartame, acesulfame K), natural flavourings including caffeine, phosphoric acid, citric acid.

Of course, the days of Coke Zero as we know it are numbered.

Coca-Cola has scrapped its Coke Zero product line and will release a new product, titled Coke No Sugar, in its place.

Coca Cola promises Coke No Sugar tastes just like the 130-year-old Coke recipe should - without using sugar.

So if you REALLY love Coke Zero as it is, better start stockpiling now.